Cloudy Spot after Wet Sanding...

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SierraGolfCharlie

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Greetings everyone,

I just got a new car this past November & I found a deep scratch on my rear bumper. I wet sanded the area & filled the scratch in with touch-up paint but I was left with a somewhat cloudy looking spot. I already applied ScratchX & polish with some improvement but it's not going away. I've attached a picture of the cloudy spot which is hard to see through a camera. Can someone suggest how to get rid of the spot?

Thanks!

View attachment 55313
 
Need a better pic to know for sure. Could be left over sanding marks or you could have blown through the clear.

What grit do you sand with? How was the SratchX applied?
 
SierraGolfCharlie said:
Greetings everyone,

I just got a new car this past November & I found a deep scratch on my rear bumper. I wet sanded the area & filled the scratch in with touch-up paint but I was left with a somewhat cloudy looking spot. I already applied ScratchX & polish with some improvement but it's not going away. I've attached a picture of the cloudy spot which is hard to see through a camera. Can someone suggest how to get rid of the spot?

Thanks!

View attachment 55313
Click to expand...


Sounds like you sanded and/or buffed through the clear layer of paint.

When you buffed, did you see any color of the paint coming off and onto your pad?

If so, that's a bad sign.


55313d1488406939-cloudy-spot-after-wet-sanding-cloudy-spot.jpg



The factory clearcoat on a new car is around 2 mils thin. That's thinner than a post it note.


If you're not seeing any color of the basecoat coming off after applying ScratchX then that's a good sign and it's also a sign you need to keep working the area to remove the sanding marks which are what are probably making the area look dull.

What grit sanding paper did you use?

:)
 
I didn't even notice what sub-forum it was in. :laughing:
 
Picture is not clear, but it sounds as though you've blown through your clear coat. As Mike asked, are your seeing any color on your pad?
 
Just by coincidence,


I had a guy stop by Autogeek today to show me his front fender and driver's door.

He sanded on it and then buffed on it and burned through a huge area on the fender a small area on the door.

He used #1200 grit wet/dry paper.

I tested both panels by using a white polish with a white cloth and after rubbing the dull areas a little and turning the cloth over there was black paint all over the cloth.

He was sad to hear what he had done and even more sad to find out the ONLY way to fix the areas would be to repaint either the affected areas by having a painter do what's called a "blend" or entirely repaint both panels.


For those reading this into the future, before you start sanding on your car,

First read this article

Clearcoats are thin by Mike Phillips



Then join this forum and ask some basic questions....


Join the AutogeekOnline forum


Repaints are expensive.


:)
 
So I used 3,000 grit sandpaper & I didn't notice any paint coming off the pad. Since this is the first time I ever wet sanded a car, I probably went through the OEM clear coat without noticing. :doh:

So if I went through the clear coat, what is my next step?
Also, if I didn't, how would I know for sure I did go through the clear coat & how would I repair the area?
 
SierraGolfCharlie said:
So I used 3,000 grit sandpaper & I didn't notice any paint coming off the pad. Since this is the first time I ever wet sanded a car, I probably went through the OEM clear coat without noticing. :doh:

So if I went through the clear coat, what is my next step?
Also, if I didn't, how would I know for sure I did go through the clear coat & how would I repair the area?
Click to expand...

You will know if you try to polish that area and you see the color of your paint on the pad. But as others have said, it looks like the clear is gone in that area. Hopefully it's not, but if it is you can just put a quality LSP on and not let it bug you. Or get it repainted.
 
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